enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   A block and tackle [1] [2] or only tackle [3] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load.

3. Mechanical advantage device - Wikipedia

   en.wikipedia.org/wiki/Mechanical_advantage_device

   Examples of rope and pulley systems illustrating mechanical advantage. Consider lifting a weight with rope and pulleys. A rope looped through a pulley attached to a fixed spot, e.g. a barn roof rafter, and attached to the weight is called a single pulley. It has a mechanical advantage (MA) = 1 (assuming frictionless bearings in the pulley ...

4. File:Four pulleys.svg - Wikipedia

   en.wikipedia.org/wiki/File:Four_pulleys.svg

   F Z = Rope tension or effort force; F L = Load or resistance force; s = Rope displacement (distance pulled) or effort distance; h = Height (distance load is raised) or resistance distance; An illustration showing how pulleys are used to obtain a mechanical advantage. Using additional pulleys decreases the force required but increases the ...

5. Arresting gear - Wikipedia

   en.wikipedia.org/wiki/Arresting_gear

   On aircraft carriers there are either three or four cables, numbered 1–4 from aft to forward. Pendants are made of wire rope with a diameter of 1, 1 + 1 ⁄ 4 or 1 + 3 ⁄ 8 inches (25, 32 or 35 mm).

6. Z-drag - Wikipedia

   en.wikipedia.org/wiki/Z-drag

   A Z-Drag or Z-Rig is an arrangement of lines and pulleys, effectively forming a block and tackle, that is commonly used in rescue situations. [1] The basic arrangement results in pulling the hauling end 3 times the distance the load is moved, providing a theoretical mechanical advantage of three to one .

7. Line shaft - Wikipedia

   en.wikipedia.org/wiki/Line_shaft

   For example, a 40" pulley at 100 rpm would turn a 20" pulley at 200 rpm. Pulleys solidly attached ("fast") to the shaft could be combined with adjacent pulleys that turned freely ("loose") on the shaft (idlers). In this configuration the belt could be maneuvered onto the idler to stop power transmission or onto the solid pulley to convey the power.